Question

What is the difference of the two polynomials?
(7y2 + 6xy) – (–2xy + 3)
A7y2 + 4xy – 3
B7y2 + 8xy – 3
C7y2 + 4xy + 3
D7y2 + 8xy + 3

Answer 1

B 7y2 + 8xy - 3 because 2xy becomes positive and 3 negative

Answer 2

Answer:  

$7y^2+8xy-3$

Explanation:

The difference of polynomial means subtracting the two polynomials

We have been given two expressions $7y^2+6xy$  and $-(-2xy+3)$

We need to subtract the given two polynomials

Given expression can be rewritten as  

$7y^2+6xy+2xy-3$

After simplifying means solving like terms that is the term of same variable we will get

$7y^2+8xy-3$